# Relationship history for MSHA mine 3004084

Current hierarchy: **Timothy A Empet → Empet Flagstone Inc. → Tarbell Hill Quarry**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Timothy A Empet → Tarbell Hill Quarry; 2015-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Empet Flagstone Inc. → Tarbell Hill Quarry; 2021-05-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy A Empet → Empet Flagstone Inc.; 2021-05-10 to current/open; source msha-controller-operator-history